Replacement for TCA280A

The "Computer-controlled slide fader" we
published in 1988 (Ref. 1) was based on
dimmer chip Type TCA280A. In spite of
this device being a Philips Components
preferred product at the time, it proved
difficult to obtain for many readers. When
approached, Philips Components admitted
that they had taken the TCA280A
out of production without prior warning,
and that no pin-compatible replacement
was available.